On Thu, 30 Jan 2014, Richard Biener wrote:
/* Associate (p +p off1) +p off2 as (p +p (off1 + off2)). */
ptr = gimple_assign_rhs1 (stmt);
off1 = gimple_assign_rhs2 (stmt);
! if (TREE_CODE (ptr) != SSA_NAME
! || !has_single_use (ptr))
return false;
def_stmt = SSA_NAME_DEF_STMT (ptr);
if (!is_gimple_assign (def_stmt)
! || gimple_assign_rhs_code (def_stmt) != POINTER_PLUS_EXPR
! || !can_propagate_from (def_stmt))
return false;
ptr = gimple_assign_rhs1 (def_stmt);
off2 = gimple_assign_rhs2 (def_stmt);
Hello,
we have 2 helpers get_prop_source_stmt and defcodefor_name in
tree-ssa-forwprop.c, but you don't seem to like them. Do they have a
particular drawback or is it just easier to rewrite the code than to
remember how to use those? I am asking so I know whether I can / should
use them in my future patches.
--
Marc Glisse
